174 



MUSCI. Fissidcui 



unequally cleft teeth, as in Dicrnnum, tlie narrow segments with numerous prominent 

 joints, and geniciilately inllexed when dry. 



A "enus readily rei'oj,niizi'(l hy its very injciiliar toliagc, of about 20 Eiuoj)eaii sjicuii-b ami 

 nearly as many Anu-ricau, 5 ^wdcs, being common to both regions. 

 * Fruit terminal: very small. 



1. F. limbatUS, Sulliv. Small, the stems 2 or 3 lines high, simple or sparingly 

 branched below : leaves 8 to 10 pairs, oblong, hyaline upon the margin except at 

 the apex, the acute blade scarcely equalling the broadly margined complicate base : 

 inflorescence monoecious ; perigonial leaves broadly ovate, entire, with nearly obso- 

 lete blade : capsule oblong, somewhat cernuous, upon a comparatively long i)edicel : 

 teeth of the peristome almost wholly inflexed within the capsule. — Pacif. 11. Kep. 

 iv. 185, t. 1. 



Oii shaded ground near Oakland, and connnon around San Francisco, lliijclow, Bolander. 



2. F. ventricosus, Lesq. Stouter, loosely cespitose, dark colored ; the stems 

 an inch long or niunj, branching from the base, the branches simi)lc or sparingly 

 divided, with rootlets at all the nodes : leaves numerous, cruwded, erect sjjreading, 

 coulter-shaped, with dilated ventricose base, obtusish, with a thick costa, and 

 generally surrounded by a thick margin ; areolation ovate-quadrate or irregularly 

 polygonal; involucral leaves broadly ovate, irregularly dis-sected, apiculate : intlcire.- 

 eence monoecious : capsule obovate, erect upon a very short scarcely exserted pedicel, 

 attenuate at base ; teetli erect, rather broad. — ^lem. Calif. Acad. i. 7 ; Sulliv. Icon. 

 Muse. Supid. 4r), t. 30. 



On snbmerged rocks, Mendocino City, Bolander. Only a single capsule was collected, without 

 operculum. 



* * Fruit ajcillari/ : j^lants lar(jer. 



3. F. grandifrons, Bridel. Stems erect, 2 or 3 inches high, simple or si)aringly 

 branched, ratlier rigid, green : leaves numerous, crowded or somewhat remote, 

 linear-lanceolate, acuminate, thick and rigid, formed of several layers of cells, the 

 stout costa ceasing below the apex : inflorescence diacious, the female flower bud- 

 like and axillary, containing numerous archegonia ; male flower and capsule unknown. 

 — Bruch Sl Sciiinq). Bryol. Eur. t. lOG. 



Near the sea, Mattole district, Humboldt County, on rocks constantly wet with spring water, 

 Bolander. Also found at Niagara Falls, and upon wet rocks in Mexico, Eiuope, Algiers, and the 

 mountains of India. 



F. ADiANTOinKs, Hedw., is a more common species in the Atlantic States anil throughout 

 Europe, on shadeil moist ground and wet rocks, and was collected by Lijull at Foit ColviUe. 

 The nuich branched stems are 1 to 3 inches high, with obh.ng-lanceolate aciunniate wrruhite 

 leaves hyaline npon the margin, the costa excurrent : iutlorescence mon(e(ious, axillary ; petlicel 

 from the middle of the stem : capsule nodding : operculum long-beaked : teeth bright puriile. — 

 Bruch & Schimp. 1. c, t. 1(»5. 



17. DISTICHIUM, Bruch k Schimp. 



Densely cespitose alpine perennials, on wet rocks, dichotonu^usly branched. 

 Leaves distichous, spreading from a clasping base, subulate-setaceous, costate, entire 

 or nearly so, smooth and shining ; areolation minutely (piadrato above, looser antl 

 hyaline at base. Inflorescence moncccious ; antheridia long and slender. Calyptra 

 cucidlate, long-beaked. Capsule erect or nodding, long-pedii-ellate, oblong or eylin- 

 «lrical, coriaceous, shining, annulate; operculum conic. Peristome single, of 10 

 linear-lanceolate teeth, subentire or hifi<l, with a submedial line, punctnlate, 

 reddish. 



Including 2 species, both widely distributed. 



